Add some error check to be DB_thread checks

build/openldap.m4

@@ -354,18 +354,22 @@ main()
 
 #ifdef DB_CDB_ALLDB
 	rc = env->set_flags( env, DB_CDB_ALLDB, 1 );
-	if( rc ) goto done;
+	if( rc == 0 )
 #endif
 
+	{
 #if (DB_VERSION_MAJOR > 3) || (DB_VERSION_MINOR >= 1)
 		rc = env->open( env, NULL, flags, 0 );
 #else
 		rc = env->open( env, NULL, NULL, flags, 0 );
 #endif
+	}
+
+	if( rc ) {
+		printf("BerkeleyDB: %s\n", db_strerror(rc) );
+		return rc;
+	}
 
-#ifdef DB_CDB_ALLDB
-done:
-#endif
 #if (DB_VERSION_MAJOR > 3) || (DB_VERSION_MINOR >= 1)
 	env->remove( env, NULL, DB_FORCE );
 #else